There was a group of 6 girls and some boys. The average mass of the group of children was 40 kg. The average mass of the 6 girls was 44 kg. The average mass of the boys was 37 kg. How many boys were there in the group?
Hint
Question 2 of 4
2. Question
Amber baked some cookies and packed them into containers of different sizes. The average number of cookies in each container is 24. After giving away one that contained 14 cookies, the average number of cookies in the remaining containers became 26. How many cookies did Amber bake?
Question 3 of 4
3. Question
The average height of a group of boys is 164 cm. After one of the boys who is 179 cm tall left the group, the average height became 161 cm. How many boys were there in the group in the end?
Question 4 of 4
4. Question
The average cost of some handbags that Yenni bought is $80. If Yenni buys another handbag that costs $100, the average cost of all the handbags will become $84. How many handbags did Yenni buy?
